What counts as cut bait?
Cut bait is a piece of fish used as an offering: a chunk, strip, head, or other section. It is different from a live minnow and from manufactured punch bait. Skin, flesh, oil, and scent all contribute to the presentation.
Shad and herring are familiar examples, but the usable species depend on local rules. Catching a fish legally does not automatically make it legal bait. Check possession, harvest, and transport rules before preparing any fish for the hook.
Choose a piece that fits the hook
A chunk is compact and often convenient for a bottom rig. A strip has more movement but may fold over or twist. A head section can be durable and substantial. None is automatically the best choice for every catfish.
Hook through a firm section while leaving the point and gap open. A large piece wrapped around a small hook can prevent the hook from finding purchase. With a circle hook, preserve that open gap and follow its intended steady-pressure hook-setting method.
Fresh does not mean warm
Keep bait chilled in a sealed container and separate from food. Use a stable cutting surface and handle the knife away from your body. Prepare manageable amounts, returning the rest to the cooler.
Spoiling bait is not a required improvement. Replace washed-out or badly damaged pieces, and dispose of scraps according to local rules. Do not dump unused baitfish or bait water into a different water body.
Choose the fish before choosing the piece
Fresh cut bait is a useful starting point for blue and channel catfish. Flatheads often respond well to legal live fish, so a cut-bait result should not be assumed to apply equally to all three. The location and presentation can matter more than the size of the chunk.